Seasonal variation in semen quality of swamp buffalo bulls (Bubalus bubalis) in Thailand

Koonjaenak, Seri; Chanatinart, Vichai; Aiumlamai, Suneerat; Pinyopumimintr, Tanu; Rodriguez‐Martinez, Heriberto

doi:10.1111/j.1745-7262.2007.00230.x

Cited by 44 publications

(51 citation statements)

References 9 publications

(10 reference statements)

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“…Our finding that sperm concentration and viability were lowest in samples obtained during summer is in agreement with those of previous reports in the human [37] and pig [38]. However, our finding is in contrast to those observed in water and swamp buffalo [39,40] of which optimal seminal quality was observed in samples obtained during rainy season and summer. The species differences between elephants and buffaloes may be due to variations in study location and techniques used for semen analysis.…”

Section: Discussionsupporting

confidence: 91%

“…We speculate that the rise in ambient temperature in summer may affect sperm production [37] and sperm viability as has been reported in mice [43] and wild boars [44]. However, temperature may not influence sperm morphology, since a study on semen quality of swamp buffalo bulls used for artificial insemination under tropical conditions in Thailand showed that the proportion of morphologically normal spermatozoa were highest in summer [40] and a similar finding was observed in Asian elephant bulls in the present study. A complicating factor is that testes in elephants are intra-abdominal unlike the situation in other mammalian species where the testes are located in the scrotum to avoid damage to sperm from high body temperatures.…”

Section: Discussionmentioning

confidence: 91%

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Potential factors affecting semen quality in the Asian elephant (Elephas maximus)

Thongtip

Saikhun

Mahasawangkul³

et al. 2008

Reprod Biol Endocrinol

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BackgroundOne of the major obstacles in using artificial insemination to manage genetics of elephant population in captivity is the large variations in semen quality among ejaculates within the same and among individuals. The objectives of this study were to determine the influences of (1) age (2) seasonality (3) and circulating testosterone (SrTest), triiodothyronine (SrT3) and tetraiodothyronine (SrT4), as well as seminal (4) testosterone (SpTest), zinc (SpZn) and protein (SpTP) on semen quality in the Asian elephantMethodsAnalyses, including motility, viability and morphology were performed in semen samples collected twice monthly from 13 elephant bulls (age range, 10-to 72-years) by manual stimulation between July 2004 and June 2005. Serum samples obtained monthly were assessed for SrTest, SrT3, SrT4, and seminal plasma samples were evaluated for, SpTest, SpZn and SpTP.ResultsThe highest semen quality was observed at age 23 to 43 years. Percentages of progressive motility and viable sperm were lowest at age 51 to 70 years (P < 0.05); on the other hand, sperm concentration was lowest at age 10 to 19 years (P < 0.05). Percentage of sperm with normal morphology was highest at age 23 to 43 years. The levels of SrT3, SrTest, SpTest and SpZn were lowest at age 51 to 70 years, whereas SrT4 was lowest at age 23 to 43 years. Seasonality significantly affected semen characteristics in which percentage of viable sperm and cell concentration were highest during rainy season and lowest during summer months (P < 0.05). However, percentage of sperm with normal morphology was highest in summer and lowest in rainy season (P < 0.05). Seasonality significantly influenced SrTest with elevated concentrations observed in rainy season and winter (P < 0.05).ConclusionThis study indicates that age and seasonality had influence on semen characteristics in the Asian elephant. The knowledge obtained in this study will improve our understanding of the reproductive biology of this species.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 91%

Potential factors affecting semen quality in the Asian elephant (Elephas maximus)

Thongtip

Saikhun

Mahasawangkul³

et al. 2008

Reprod Biol Endocrinol

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“…Similar report was not available in cattle and other species to compare the present study results. However, the motility and velocity parameters were measured by CASA in domestic animal species such as crossbred cattle (Perumal, 2008;Perumal et al, 2011), Bali cattle (Sarsaifi et al, 2013), buffalo (Anil Kumar et al, 2011;Koonjaenak et al, 2007), sheep (Kumar et al, 2010), goat (Kozdrowski et al, 2007), boar (Broekhuijse et al, 2012) and dog (Domosławska et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

Effect of unilateral cryptorchidism on mobility and velocity parameters of sperm in (Bos frontalis) semen

Perumal¹,

Chang²,

CTR³

et al. 2016

JEBAS

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KEYWORDS Mithun CryptorchidComputer assisted sperm analysis Motility Velocity parameters ABSTRACTThe present study was conducted to assess the motility and velocity parameters of sperm of normal intact and unilateral cryptorchid mithun bull by computer assisted sperm analyzer (CASA). Twenty ejaculates were collected from cryptorchid (n=10) and normal intact (n=10) bull. The different parameters assessed through CASA were static sperms (SM), Total Motility (TM), forward progressive motility (FPM), Average Path velocity (VAP), Average beat/cross frequency (BCF), Straightness (STR), Average straight line velocity (VSL), Average curvilinear velocity (VCL), Average amplitude of lateral head displacement (ALH), Wobble (WOB), Linearity (LIN), Elongation (EL). The result showed that these CASA parameters differed significantly (p<0.05) between the intact and cryptorchid mithun bull and intact mithun bull has significantly (p<0.05) higher value than cryptorchid mithun bulls. It was concluded that most of the CASA parameters were significantly lower in cryptorchid bulls than intact bull and however, due to the genetic hereditary nature of cryptorchid, these bulls should not be used for breeding purposes.

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“…In experiment [9], in Thailand (tropical climate), semen collections were performed between winter and spring, when temperatures were mild. For buffaloes, this period was considered more suitable for the collection of semen, destined for freezing, since the ejaculates collected during these months of the year presented higher membrane integrity and stability, as well as better values for the movement (speed) patterns provided by CASA (computerassisted sperm analysis) to the samples which were thawed, and no effect was observed on the quality of the ejaculates.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, males subjected to thermal stress have their sexual activity depressed, with less testosterone production, due to the production of stressors secreted by metabolism [1,6,7,8,9,10]. In general, stress can be defined as any factor or change from the environment which interferes with homeostasis, which is a complex and dynamic system of equilibrium that governs the correct functioning of living organisms.…”

Section: Introductionmentioning

confidence: 99%

Influence of Seasonality on Buffalo Semen

Castro¹

2017

AVS

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Abstract:The present study was undertaken with the objective to compare the influence of seasonal temperature variations on parameters of ejaculates of Murrah buffalo bulls raised in the humid tropical Amazonian climate. Five buffaloes were selected from a batch of 12 adult bulls, pre-evaluated for clinical and andrological examination, and were used as semen donors, using as criterion the best ejaculate quality. The objective of the present study was, therefore, to test the hypothesis that season affects buffalo semen quality in tropical regions. The experimental period was divided into two phases: rainy season (RS), from February to May, and non rainy season (nRS), from August to November 2016. The ejaculates were collected twice a week (n=30) per bull, namely 10 ejaculates in the RS and 20 ejaculates in the nRS period, totaling (n=150) samples for analysis. The evaluations of the semen samples were performed with fresh semen, immediately after each collection. The immediate analyzes pertinent to the physical and morphological characteristics of the ejaculates showed that a significant statistical difference was observed for the parameters wave motion, motility, vigor, major defects, minor defects, total defects and plasma membrane integrity between the both periods (P<0.05). In the mesoregion of the Lower Amazon, a tropical region, the ideal period for experiments using buffalo ejaculates, are the months of the rainy season. For in this period a better quality without ejaculate of buffaloes was observed.

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Seasonal variation in semen quality of swamp buffalo bulls (Bubalus bubalis) in Thailand

Abstract: Seasonal changes did not appear to cause deleterious changes in sperm quality in swamp buffalo AI-sires in tropical Thailand.

Cited by 44 publications

References 9 publications

Potential factors affecting semen quality in the Asian elephant (Elephas maximus)

Potential factors affecting semen quality in the Asian elephant (Elephas maximus)

Effect of unilateral cryptorchidism on mobility and velocity parameters of sperm in (Bos frontalis) semen

Influence of Seasonality on Buffalo Semen

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